Reservoir · Ohio · United States · USACE CWMS
Senecaville Lake
104.1% full
Capacity
53.66 hm³
Volume stored
56 hm³
Coordinates
39.925°N, 81.434°W
Last updated
2026-07-30
Current fill
104.1%vs 7 days ago
-0.6%losing
vs 1 year ago
+3.0%year-over-year
7-day trend
→stable
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-07-30.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.925, -81.434 · Open in Google Maps
About Senecaville Lake
As of July 30, 2026, Senecaville Lake is filled to 104.1% of its total capacity, holding roughly 56 hm³ of water out of a maximum 54 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts), and it is 3.0 points above its level on the same date a year earlier.
Across the readings we hold for Senecaville Lake — 100 data points between July 31, 2021 and July 30, 2026 — the level has ranged from a low of 101.0% (September 18, 2021) to a high of 105.0% (August 18, 2021).
It is operated by USACE primarily for multiple purposes. It lies within the Ohio basin at 39.925°N, 81.434°W.
Key facts
- Current fill level
- 104.1%
- Water stored
- 56 hm³
- Total capacity
- 54 hm³
- 7-day change
- ▼ 0.6 pts
- Year-on-year
- ▲ 3.0 pts
- Primary use
- Multipurpose
- River basin
- Ohio
- Operator
- USACE
- Coordinates
- 39.925°N, 81.434°W
- Last updated
- July 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Jul 2026 | 104.1% | 56 |
| 29 Jul 2026 | 104.7% | 56 |
| 28 Jul 2026 | 105.0% | 57 |
| 27 Jul 2026 | 105.0% | 58 |
| 26 Jul 2026 | 105.0% | 59 |
| 25 Jul 2026 | 105.0% | 60 |
| 24 Jul 2026 | 105.0% | 61 |
| 23 Jul 2026 | 105.0% | 62 |
| 22 Jul 2026 | 105.0% | 62 |
| 21 Jul 2026 | 105.0% | 57 |
| 20 Jul 2026 | 104.1% | 56 |
| 19 Jul 2026 | 104.2% | 56 |
Frequently asked questions
What is the current water level of Senecaville Lake?
As of July 30, 2026, Senecaville Lake is at 104.1% of its capacity, holding approximately 56 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Senecaville Lake reservoir full?
Senecaville Lake is essentially full, sitting at 104.1% of capacity as of July 30, 2026.
Is the water level at Senecaville Lake rising or falling?
The level at Senecaville Lake has been broadly stable over the latest week on record (-0.6 points).
How much water can Senecaville Lake hold?
Senecaville Lake has a total capacity of 54 hm³.
Where is Senecaville Lake reservoir located?
Senecaville Lake is located in Ohio, United States, within the Ohio basin (coordinates 39.925°N, 81.434°W).
What is Senecaville Lake used for?
Senecaville Lake is used primarily for multiple purposes, and is managed by USACE.